The marble not yet carved can hold the form of every thought the greatest artist has.

I don’t think we are going to become extinct. We are very clever and very resourceful.

Do you want to know who you are? Don't ask. Act! Action will delineate and define you.

It's not whether you got knocked down; it's whether you get back up.

Great spirits have always encountered violent opposition from mediocre minds.

If my mind can conceive it, and my heart can believe it - then I can achieve it.

When they say the sky's the limit to me that's really true

You have to work hard to get to the top of your game. I think every writer has doubts! I still do all the time.

Happiness depends more on the inward disposition of mind than on outward circumstances.

Doing what you love is the cornerstone of having abundance in your life.

People don't realize how a man's whole life can be changed by one book.

Don't wish it were easier, wish you were better.

I hated every minute of training, but I said, 'Don't quit. Suffer now and live the rest of your life as a champion'.

Life is 10 percent what happens to you and ninety percent how you respond to it.

I have a dream that one day little black boys and girls will be holding hands with little white boys and girls.

Don't stop chasing your dreams, because dreams do come true.

Employ your time in improving yourself by other men's writings so that you shall come easily by what others have labored hard for.

Our life is what our thoughts make it.

Others have seen what is and asked why. I have seen what could be and asked why not.

Patience is bitter, but its fruit is sweet.

Believe you can and you're halfway there.